| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only a short [noun] [prep] | 90 |
|
| 2 | only a [adj] period [prep] | 14 |
|
| 3 | [adv] a short period [prep] | 12 |
|
| 4 | only a short period [prep] | 7 |
|
| 5 | only [art] short period [prep] | 7 |
|
| 6 | only [art] short period [prep] | 7 |
|
